import type { Config } from "./config.js";
import { NocoDBClient } from "./services/nocodb.js";
import { Mailer } from "./services/mailer.js";
import { RedeemQueue } from "./services/redeemQueue.js";
import { AuditLogger } from "./services/audit.js";
import { DonorService } from "./services/donors.js";
import { loadActiveTables } from "./services/state.js";

/** Shared services wired once at startup and hung off the Fastify instance. */
export interface AppContext {
  config: Config;
  nocodb: NocoDBClient;
  mailer: Mailer;
  queue: RedeemQueue;
  audit: AuditLogger;
  donors: DonorService;
}

export function buildContext(config: Config): AppContext {
  const nocodb = new NocoDBClient(config);
  const audit = new AuditLogger(config);

  // Apply a persisted "active event table" override (set from the admin area),
  // so switching the event survives redeploys without editing .env.
  const override = loadActiveTables(config.STATE_DIR);
  if (override) {
    nocodb.setTableId(override.ticketsTableId);
    audit.setTableId(override.auditTableId ?? null);
  }

  return {
    config,
    nocodb,
    mailer: new Mailer(config),
    queue: new RedeemQueue(),
    audit,
    donors: new DonorService(config),
  };
}

// Ambient module augmentation so `fastify.ctx` and `request.user` are typed.
declare module "fastify" {
  interface FastifyInstance {
    ctx: AppContext;
  }
}

declare module "@fastify/jwt" {
  interface FastifyJWT {
    payload: { role: "staff" };
    user: { role: "staff" };
  }
}